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Top Forums Shell Programming and Scripting Which one is faster to remove control m characters? Post 302085165 by madhunk on Tuesday 15th of August 2006 06:17:36 PM
Old 08-15-2006
Which one is faster to remove control m characters?

I have a file with millions of records...Before I experiment, I would like to know which one is faster.

Both the commands work absolutely fine on a smaller set of records.

Please advice.

Code:
sed 's/^M//g' ${INPUT_FILE} > tmp.txt

mv  tmp.txt  ${INPUT_FILE}

Code:
tr -d "\15"  < ${INPUT_FILE} >  tmp.txt;

mv  tmp.txt  ${INPUT_FILE}

This somehow didn't work...

Code:
tr -s '[:cntrl:]' ' ' < ${INPUT_FILE}> tmp.txt

Thank you in advance.
 

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INTERFACE-ORDER(5)						    resolvconf							INTERFACE-ORDER(5)

NAME
interface-order - resolvconf configuration file DESCRIPTION
The file /etc/resolvconf/interface-order is used to control the order in which resolvconf nameserver information records are processed by those resolvconf update scripts that consult this file. (The name of the file is apt because a resolvconf nameserver information record is named after the interface with which it is associated.) The file contains a sequence of shell glob patterns, one per line. The position of a record in the order is the point at which its name first matches a pattern. Patterns may not contain whitespace, slashes or initial dots or tildes. Blank lines and lines beginning with a '#' are ignored. Resolvconf update scripts in /etc/resolvconf/update.d/ that consult this file include the current default versions of dnsmasq, pdnsd and libc. (Actually they don't read the file directly; they call the utility program /lib/resolvconf/list-records which lists records in the specified order and omits the names of empty records.) EXAMPLE
# /etc/resolvconf/interface-order # Use nameservers on the loopback interface first. lo* # Next use records for Ethernet interfaces eth* # Next use records for Wi-Fi interfaces wlan* # Next use records for PPP interfaces ppp* # Last use other interfaces * AUTHOR
Resolvconf was written by Thomas Hood <jdthood@gmail.com>. COPYRIGHT
Copyright (C) 2004, 2011 Thomas Hood This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
resolvconf(8) resolvconf 18 May 2011 INTERFACE-ORDER(5)
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